/* common */
html,
body{
    height: 100%;
}
body {
    padding-left: 180px; // background-color: aquamarine;
    position: relative;
    .left {
        position: absolute;
        width: 180px;
        height: 100%;
        background-color: #0094ff;
        left: 0;
        top: 0;
    }
    .right {
        width: 100%;
        height: 100%;
        .right_top {
            height: 50px;
            padding: 10px;
        }
    }
}

.toggle_menu {
    padding-left: 0;
    .left {
        display: none;
    }
}